CN102032086B - Gasoline engine igniter controlled by single-chip microprocessor (SCM) - Google Patents
Gasoline engine igniter controlled by single-chip microprocessor (SCM) Download PDFInfo
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- CN102032086B CN102032086B CN 201010557698 CN201010557698A CN102032086B CN 102032086 B CN102032086 B CN 102032086B CN 201010557698 CN201010557698 CN 201010557698 CN 201010557698 A CN201010557698 A CN 201010557698A CN 102032086 B CN102032086 B CN 102032086B
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Abstract
The invention relates to a gasoline engine igniter controlled by a single-chip microprocessor (SCM). The gasoline engine igniter comprises a capacity discharge ignition circuit, a signal trigger circuit, an SCM chip power supply circuit and an SCM chip integrated circuit (IC) 1, wherein, the capacity discharge ignition circuit, the signal trigger circuit and the SCM chip power supply circuit are controlled by an SCM chip; and as the signal trigger circuit and the SCM chip power supply circuit are mutually independent without interfering with each other, the SCM chip power supply circuit does not adsorb the current in the trigger coil of the signal trigger circuit, thus increasing ignition energy, improving the stability of the whole circuit, ensuring sufficient combustion of thegasoline in an engine, and reducing environmental pollution.
Description
Technical field
The present invention relates to a kind of igniter for automobile, relate in particular to a kind of monolithic processor controlled igniter of gasoline engine that utilizes.
Background technique
Present igniter of gasoline engine technology adopts single-chip microcomputer to control more, single-chip microcomputer power supply voltage in the igniter of this type is all taken from the trigger winding loop, most of electric current in the power supply circuits meeting absorption point firearm trigger winding loop of singlechip chip, cause the initial firing current of igniter low and unstable, thereby cause the ignition energy consequences such as totally on the low side, high speed ignition degradation of energy is fast, occur gasoline combustion not thoroughly, toxic emission is not up to standard and the problem such as high engine speeds poor stability.
It open day was the Single-chip Controlling high voltagehigh frequency igniter that June 7, publication number in 2000 are CN2381806Y, the control core microprocessor that its circuit comprises power circuit, be made of microprocessor IC1 and peripheral circuit thereof, the signal circuit that is consisted of by high speed photo coupling IC4 and peripheral circuit and the firing circuit that is consisted of by field effect transistor N1 and high pressure packet H, the output of control core microprocessor connects the signal circuit input, the input of signal circuit output contact ignition circuit, power circuit provide power supply for other each circuit.This firing circuit has been realized the flexible adjustment to ignition energy, but the circuit structure that adopts is complicated, and power supply links to each other with the trigger winding loop, easily absorb the energy in the trigger winding loop, cause the shortcomings such as ignition energy reduction, integrated circuit poor stability, thereby cause in the motor gasoline combustion insufficient, and bring serious environmental pollution.
Summary of the invention
The present invention is directed in the existing igniter of gasoline engine problems such as the low and electric current of existing initial firing current is unstable, independently monolithic processor controlled igniter of gasoline engine of a kind of singlechip chip power supply circuits and signal trigger circuit phase is provided.
For the problems referred to above, the technical solution adopted in the present invention is:
A kind of monolithic processor controlled igniter of gasoline engine, it comprises capacitive discharge ignition circuit, signal trigger circuit, singlechip chip power supply circuits and singlechip chip IC1, and capacitive discharge ignition circuit, signal trigger circuit, singlechip chip power supply circuits all are connected with singlechip chip; The signal trigger circuit comprise diode D1, the negative pole of diode D1 links to each other with resistance R 1, resistance R 1 is connected negative pole, capacitor C 1 and the resistance R 4 of reference diode D5 more afterwards with resistance R 2, R3 series connection, the other end of resistance R 4 connects the base stage of capacitor C 2, resistance R 5 and triode Q1, the positive pole connection capacitor C 1 of reference diode D5 and capacitor C 2, the other end of resistance R 5, the emitter of triode Q1, the collector electrode of triode Q1 connects capacitor C 3, resistance R 6 and singlechip chip IC1, and the other end of resistance R 6 connects singlechip chip IC1; The singlechip chip power supply circuits comprise inductance L 2, inductance L 2 connects bridge rectifier 1,3 two ends, 2 ends of bridge rectifier connect the positive pole of electrochemical capacitor C9, negative pole, capacitor C8 and the resistance R 8 of reference diode D6, the other end of resistance R 8 connects negative pole, capacitor C 7 and the singlechip chip IC1 of reference diode D7, and 4 ends of bridge rectifier connect the negative pole of electrochemical capacitor C9, the positive pole of reference diode D6, the other end of capacitor C 8, the positive pole of reference diode D5, the other end of capacitor C 7.
In the prior art, the power supply circuits of singlechip chip are to be located in the loop of signal trigger circuit, and in the present invention, singlechip chip power supply circuits and signal trigger circuit are separate.In the single-chip microcomputer power supply circuits, the Pulse Electric kinetic potential that inductance L 2 two ends inductions produces through output after the rectification of bridge rectifier current circuit again through after the soft copies such as electric capacity, diode that connect carry out filtering, resulting direct current (d.c.) input singlechip chip IC1 is singlechip chip IC1 power supply; In the signal trigger circuit, the induction of inductance L 1 two ends produces the Pulse Electric kinetic potential, then the circuit rectification and voltage division that forms via diode D1, resistance R 1, R2, R3, access again and access triode Q1 after the π type eliminator that is comprised of capacitor C 1, resistance R 4, capacitor C 2, resistance R 5 is rejected impulsive noise signal, base stage is used for the conducting cut-off state of control triode Q1, and triode Q1 collector electrode access singlechip chip uses as trigger signal.Singlechip chip power supply circuits and signal trigger circuit are independent mutually, and the electric current of power supply circuits in can the trigger winding of absorption signal trigger circuit improves the stability of ignition energy and integrated circuit.
For technique scheme, we also have further Optimized Measures:
As optimization, the capacitive discharge ignition circuit comprises inductance L 1, the head end of inductance L 1 connects the positive pole of diode D1, the positive pole of diode D2 and resistance R 7, the tail end of inductance L 1 connects the positive pole of reference diode D5, the negative pole of diode D2 connects capacitor C 6, the A end of the negative pole of diode D4 and controllable silicon Q2, the tail end of the primary air L3 of the other end connection transformer TK of capacitor C 6, the head end of the secondary winding L4 of the head end connection transformer TK of primary air L3, the positive pole of diode D4, the K end of controllable silicon Q2, the G end of controllable silicon Q2 connects the signal output part of singlechip chip IC1.The Pulse Electric kinetic potential that inductance L 1 two ends produce carries out storing electric current in the backward capacitor C 6 of one way rectifier through diode D2, loop current is got back to the tail end of inductance L 1 through the primary air L3 of transformer TK again, duration of charge growth along with capacitor C P, the dc pulse voltage at capacitor C 6 two ends will up to 200V to 300V, can induce at secondary winding L4 place high voltage pulse and light the petrol engine running after receiving trigger signal.
As optimization, the tail end ground connection of inductance L 1, the head end ground connection of inductance L 3, inductance L 4, the tail end of inductance L 4 meets High voltage output HVOUT.
As optimization, the signal output part contact resistance R11 of singlechip chip IC1, the other end of resistance R 11 connect the negative pole of reference diode D9 and the G end of controllable silicon Q2, and the positive pole of reference diode D9 connects 4 ends of bridge rectifier.The effect that plays that arranges of resistance R 11 is shunting actions, the electronic component in the protection institute connecting circuit, and it is impaired that it is difficult for.
As optimization, the plus earth of reference diode D9.
As optimization, singlechip chip power supply circuits peripheral hardware has the igniter flameout circuit, the igniter flameout circuit comprises resistance R 9 and R10, diode D3, reference diode D8, capacitor C 4, one end of resistance R 9 connects the positive pole of chip power supply circuit, the other end of resistance R 9 connects the negative pole of reference diode D8, capacitor C 5, the positive pole of diode D3 and singlechip chip IC1, the negative pole of diode D3 connects capacitor C 4 and extinguish end KILL, the other end contact resistance R10 of capacitor C 4, the positive pole of reference diode D8, the other end of the other end of capacitor C 5 and resistance R 10 all links to each other with 4 ends of bridge rectifier.Reference diode D8 plays clamped effect, the caused induced voltage electromotive force of restriction extinguish end KILL, prevent from puncturing single-chip microcomputer IC1, extinguish end KILL is over the ground the time, the level of being exported by singlechip chip IC1 is low level, no-output voltage, controllable silicon Q2 Triggerless and quitting work, igniter just misfires without discharging and recharging, and petrol engine shuts down.
As optimization, the plus earth of reference diode D8, the other end ground connection of described capacitor C 5, the other end ground connection of described resistance R 10.
As optimization, 4 end ground connection of bridge rectifier, the minus earth of described electrochemical capacitor C9, the plus earth of described reference diode D6, the other end ground connection of described capacitor C 8, capacitor C 7, the plus earth of described reference diode D7, the plus earth of described diode D4, the K end ground connection of described controllable silicon Q2.
Compared with prior art, the invention has the advantages that: adopt Single-chip Controlling control igniter of gasoline engine, accurate control ignition angle, and singlechip chip power supply circuits and signal trigger circuit mutually independent, do not interfere with each other, the electric current of singlechip chip power supply circuits in also just can the trigger winding of absorption signal trigger circuit, improve the stability of ignition energy and integrated circuit, guarantee that the gasoline in the motor fully burns, reduce environmental pollution.
Description of drawings
Fig. 1 is working circuit schematic diagram of the present invention;
Wherein: L1, L2, inductance; L3, primary air; L4, secondary winding; D1-D4, diode; D5-D9, reference diode; R1-R11, resistance; C1-C8, electric capacity; C9, electrochemical capacitor; Q1, triode; The Q2 controllable silicon; IC1, singlechip chip.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technological scheme of the present invention is described in further detail.
As shown in Figure 1, in the present embodiment, the igniter of gasoline engine circuit comprises the singlechip chip power supply circuits, the signal trigger circuit, capacitive discharge ignition circuit and igniter extinction function circuit, necessary operating voltage when the singlechip chip power supply circuits provide work for singlechip chip, the signal trigger circuit are then realized the generation of trigger signal by another inductance and back-end circuit thereof, do not interfere with each other with power supply circuits, then in the situation of singlechip chip normal operation, after receiving trigger signal, export triggering level so that igniter work igniting by singlechip chip.
In the signal trigger circuit, diode D1 and resistance R 1, R2, R3 are in series, the circuit that forms is realized inductance L 1 output current is carried out rectification and voltage division, the positive pole of diode D1 connects the head end of inductance L 1, the other end of resistance R 3 connects the negative pole of reference diode D5, and the positive pole of reference diode D5 connects the tail end of inductance L 1; Capacitor C 1, capacitor C 2, resistance R 5 all are connected in parallel with reference diode D5, be connected in series with resistance R 4 in capacitor C 1 and 2 of capacitor C, resistance R 4, capacitor C 1, capacitor C 2 consist of π type eliminator with resistance R 5 four, thereby eliminate the impulsive noise signal that produces in the inductance L 1; The base stage of one end connecting triode Q1 of resistance R 5, the emitter of the other end connecting triode Q1 of resistance R 5, the collector electrode of triode Q1 connects the 5th pin of capacitor C 3, resistance R 6 and singlechip chip IC1, the other end ground connection of capacitor C 3, the other end of resistance R 6 connects the 1/2/3/4th pin of singlechip chip IC1, and R6 exists as pull-up resistor.So, realize the voltage stabilizing output of the trigger signal of singlechip chip IC, and guaranteed the security of operation of circuit.
In the capacitive discharge ignition circuit, the head end of inductance L 1 also with the positive pole of diode D2, one end of resistance R 7 links to each other, the other end ground connection of resistance R 7, the negative pole of diode D2 connects capacitor C 6, the A end of the negative pole of diode D4 and controllable silicon Q2, the tail end of the primary air L3 of the other end connection transformer TK of capacitor C 6, the head end of the secondary winding L4 of the head end connection transformer TK of primary air L3, the positive pole of diode D4, the K end of controllable silicon Q2, the tail end of secondary winding L4 connects high-voltage output end HVOUT, the K end of controllable silicon Q2 connects the positive pole of reference diode D9, the G end of controllable silicon Q2 connects the negative pole of reference diode D9, one end of resistance R 11, the 7th pin of the other end access singlechip chip IC1 of resistance R 11.
In the singlechip chip power supply circuits, the head end of inductance L 2 connects 1 end of bridge rectifier, the tail end of inductance L 2 connects 3 ends of bridge rectifier, inductance L 2 connects bridge rectifier 1,3 two ends, 2 ends of bridge rectifier connect the positive pole of electrochemical capacitor C9, the negative pole of reference diode D6, capacitor C8 and resistance R 8, the other end of resistance R 8 connects the negative pole of reference diode D7, one end of capacitor C 7, the 1/2/3/4th pin of singlechip chip IC1 and an end of resistance R 9,4 ends of bridge rectifier connect the negative pole of electrochemical capacitor C9, the positive pole of reference diode D6, the other end of capacitor C 8, the positive pole of reference diode D9, the other end of capacitor C 7, the other end of resistance R 9 connects the end of the negative pole electric capacity C5 of reference diode D8, the 6th pin of the positive pole of diode D3 and singlechip chip IC1, the positive pole of reference diode D8, the other end of capacitor C 5 connects 4 ends of bridge rectifier, the negative pole of diode D3 connects an end and the extinguish end KILL of capacitor C 4, the end of the other end contact resistance R10 of visibly moved C4, the other end of resistance R 10 connects 4 ends of bridge rectifier and the positive pole of reference diode D9.
In addition, the tail end ground connection of inductance L 1, the head end ground connection of inductance L 3, inductance L 4, the 8th pin ground connection of singlechip chip IC1.
During the igniter normal operation, the rotation of magnetic flywheel, the two ends of inductance L 1 induce the Pulse Electric kinetic potential, the electric current that this electromotive force produces carries out energy storage in the backward capacitor C 6 of one way rectifier through diode D4, loop current is got back to the tail end of inductance L 1 through the primary air L3 of transformer TK, and the voltage at capacitor C 9 two ends increased along with the duration of charge, and the dc pulse voltage at its two ends was about 300V when capacitor C 9 was saturated, capacitor C 9 is saturated rear by diode D4 afterflow, keeps the voltage at capacitor C 9 two ends.
The electric current that inductance L 1 is exported is after diode D1, resistance R 1, resistance R 2, resistance R 3 rectification and voltage division, access again the π type eliminator that capacitor C 1, capacitor C 2, resistance R 4, resistance R 5 form and eliminate the impulsive noise signal that produces in the inductance L 1, at last with filtered electric current input triode Q1, the conducting cut-off state of control triode Q1.Generally speaking, because the effect of pull-up resistor R6, singlechip chip IC1 the 5th pin that links to each other with triode Q1 collector electrode is high level, the 7th pin of singlechip chip IC1 is low level, the voltage that controllable silicon Q2 is received by the 7th pin is low leveling, i.e. Triggerless is so igniter cuts out; In capacitor C 6, fill in the time of to finish, the controlled conducting of triode Q1, the input of IC1 the 5th pin transfers low level to by high level, when IC1 the 6th pin is that high level is under the state of power supply normal power supply, IC1 the 7th pin just transfers high level to by low level, the output signal of IC1 the 7th pin triggers controllable silicon Q2 and makes its trigger electrode conducting after resistance R 11, reference diode D9 dividing potential drop, by controllable silicon Q2 anode and negative electrode, discharge to primary air L3, thereby induce high voltage pulse in high-voltage output end HVOUT output at secondary windings L4, light the petrol engine running.
2 output currents of inductance L are first through the bridge rectifier rectification, Pulse Electric is converted to direct current, the pulse direct current by producing in the set electrochemical capacitor C9 filtering switching process in rear end again, reference diode D6 then plays the effect of stable DC voltage and restriction VDC, high-frequency impulse burr in the capacitor C 8 filtering VDC, resistance R 8, reference diode D6, form again stable DC voltage of π type eliminator with capacitor C 7, then behind the galvanic current access pull-up resistor R9, the 6th pin of IC1 is high level under the igniter normal operation, thereby is singlechip chip IC1 stable power-supplying.
Be extinguish end KILL over the ground the time when opening extinguish end, the 6th pin of IC1 transfers low level to by high level, and singlechip chip IC1 is without operating current, its the 7th pin autoshutdown, thereby controllable silicon Q2 Triggerless and quitting work, igniter misfires without discharging and recharging, and petrol engine shuts down.In flame-out process, voltage-stabiliser tube D5 plays clamped effect, has limited the caused induced voltage electromotive force of extinguish end KILL, prevents that this induced voltage electromotive force is excessive and punctures singlechip chip IC1; Capacitor C 5 is the high frequency decoupling capacitor, and the effect of D7 then is to stop flame-out sheet to rectify the introducing of level, prevents the generation of inclined to one side misoperation.
In this course, the desired function of igniter and ignition angle adjustment are confirmed by the input routine of single-chip microcomputer IC1.
Claims (8)
1. monolithic processor controlled igniter of gasoline engine, it comprises the capacitive discharge ignition circuit, the signal trigger circuit, singlechip chip power supply circuits and singlechip chip IC1, described capacitive discharge ignition circuit, the signal trigger circuit, the singlechip chip power supply circuits all are connected with singlechip chip, it is characterized in that, described signal trigger circuit comprise diode D1, the negative pole of diode D1 links to each other with resistance R 1, resistance R 1 again with resistance R 2, the negative pole that connects reference diode D5 after the R3 series connection, capacitor C 1 and resistance R 4, the other end of resistance R 4 connects capacitor C 2, the base stage of resistance R 5 and triode Q1, the positive pole of reference diode D5 connects capacitor C 1 and capacitor C 2, the other end of resistance R 5, the emitter of triode Q1, the collector electrode of triode Q1 connects capacitor C 3, resistance R 6 and singlechip chip IC1, the other end of resistance R 6 connects singlechip chip IC1; Described singlechip chip power supply circuits comprise inductance L 2, inductance L 2 connects bridge rectifier 1,3 two ends, 2 ends of bridge rectifier connect the positive pole of electrochemical capacitor C9, negative pole, capacitor C 8 and the resistance R 8 of reference diode D6, the other end of resistance R 8 connects negative pole, capacitor C 7 and the singlechip chip IC1 of reference diode D7, and 4 ends of bridge rectifier connect the negative pole of electrochemical capacitor C9, the positive pole of reference diode D6, the other end of capacitor C 8, the positive pole of reference diode D9, the other end of capacitor C 7.
2. monolithic processor controlled igniter of gasoline engine according to claim 1, it is characterized in that, described capacitive discharge ignition circuit comprises inductance L 1, the head end of inductance L 1 connects the positive pole of diode D1, the positive pole of diode D2 and resistance R 7, the tail end of inductance L 1 connects the positive pole of reference diode D5, the negative pole of diode D2 connects capacitor C 6, the A end of the negative pole of diode D4 and controllable silicon Q2, the tail end of the primary air L3 of the other end connection transformer TK of capacitor C 6, the head end of the secondary winding L4 of the head end connection transformer TK of primary air L3, the positive pole of diode D4, the K end of controllable silicon Q2, the G end of controllable silicon Q2 connects the signal output part of singlechip chip IC1.
3. monolithic processor controlled igniter of gasoline engine according to claim 2 is characterized in that, the tail end ground connection of described inductance L 1, and the head end ground connection of described primary air L3, secondary winding L4, the tail end of described secondary winding L4 meets High voltage output HVOUT.
4. monolithic processor controlled igniter of gasoline engine according to claim 2, it is characterized in that, the signal output part contact resistance R11 of described singlechip chip IC1, the other end of resistance R 11 connects the negative pole of reference diode D9 and the G end of controllable silicon Q2, and the positive pole of reference diode D9 connects 4 ends of bridge rectifier.
5. monolithic processor controlled igniter of gasoline engine according to claim 4 is characterized in that, the plus earth of described reference diode D9.
6. according to claim 1 and 2 or 3 described monolithic processor controlled igniter of gasoline engines, it is characterized in that, described singlechip chip power supply circuits peripheral hardware has the igniter flameout circuit, described igniter flameout circuit comprises resistance R 9 and R10, diode D3, reference diode D8, capacitor C 4, one end of resistance R 9 connects the positive pole of chip power supply circuit, the other end of resistance R 9 connects the negative pole of reference diode D8, capacitor C 5, the positive pole of diode D3 and singlechip chip IC1, the negative pole of diode D3 connects capacitor C 4 and extinguish end KILL, the other end contact resistance R10 of capacitor C 4, the positive pole of reference diode D8, the other end of the other end of capacitor C 5 and resistance R 10 all links to each other with 4 ends of bridge rectifier.
7. monolithic processor controlled igniter of gasoline engine according to claim 6 is characterized in that, the plus earth of described reference diode D8, the other end ground connection of described capacitor C 5, the other end ground connection of described resistance R 10.
8. monolithic processor controlled igniter of gasoline engine according to claim 2, it is characterized in that, 4 end ground connection of described bridge rectifier, the minus earth of described electrochemical capacitor C9, the plus earth of described reference diode D6, the other end ground connection of described capacitor C 8, capacitor C 7, the plus earth of described reference diode D7, the plus earth of described diode D4, the K end ground connection of described controllable silicon Q2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010557698 CN102032086B (en) | 2010-11-25 | 2010-11-25 | Gasoline engine igniter controlled by single-chip microprocessor (SCM) |
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| CN 201010557698 CN102032086B (en) | 2010-11-25 | 2010-11-25 | Gasoline engine igniter controlled by single-chip microprocessor (SCM) |
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| CN102032086B true CN102032086B (en) | 2013-04-10 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104405556B (en) * | 2014-12-05 | 2016-07-06 | 重庆瑜欣平瑞电子有限公司 | A kind of general gasoline engines idle controller |
| CN112542036A (en) * | 2020-12-08 | 2021-03-23 | 大力电工襄阳股份有限公司 | High-voltage silicon controlled rectifier wireless trigger equipment |
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| US5045964A (en) * | 1990-04-30 | 1991-09-03 | Motorola, Inc. | Thermal clamp for an ignition coil driver |
| CN101021195A (en) * | 2007-03-09 | 2007-08-22 | 江南大学 | Intelligent motorcycle speed-limiting ignitor |
| CN200958453Y (en) * | 2006-08-21 | 2007-10-10 | 重庆隆鑫工业（集团）有限公司 | Double-fuel high-energy ignitor of motorcycle |
| CN201090345Y (en) * | 2007-10-30 | 2008-07-23 | 重庆工学院 | Digital type motorcycle CDI igniter |
| CN201209506Y (en) * | 2008-06-10 | 2009-03-18 | 力帆实业(集团)股份有限公司 | Double-controlled digital ignitor for rotate speed and load of motorcycle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3484133B2 (en) * | 2000-03-03 | 2004-01-06 | 株式会社日立製作所 | Ignition device for internal combustion engine and one-chip semiconductor for ignition of internal combustion engine |
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2010
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|---|---|---|---|---|
| US5045964A (en) * | 1990-04-30 | 1991-09-03 | Motorola, Inc. | Thermal clamp for an ignition coil driver |
| CN200958453Y (en) * | 2006-08-21 | 2007-10-10 | 重庆隆鑫工业（集团）有限公司 | Double-fuel high-energy ignitor of motorcycle |
| CN101021195A (en) * | 2007-03-09 | 2007-08-22 | 江南大学 | Intelligent motorcycle speed-limiting ignitor |
| CN201090345Y (en) * | 2007-10-30 | 2008-07-23 | 重庆工学院 | Digital type motorcycle CDI igniter |
| CN201209506Y (en) * | 2008-06-10 | 2009-03-18 | 力帆实业(集团)股份有限公司 | Double-controlled digital ignitor for rotate speed and load of motorcycle |
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| JP特开2001-248529A 2001.09.14 |
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